Hi All,

i'm having a strange problem with a treshold trigger on a 0BA8 DC24v LOGO.

I have a water pulse counter on I6 , and it counts the pulses ok (80 imp/liter), and i have connected the input to a treshold trigger that measures in 4 seconds. So the frequency in my simulation (when i set I6 at a frequency of 80) is 320.  But when i run the program on the logo and let my water flow at about a liter a minute, i only get a frequency of 6 on my treshold trigger ??

Am i missing something here? I've been trying to find answers here on the forum but i can't say i have so far. :(

Thanks allot.

Bart

Do you use the "Hihg speed input"

Normaly inputs have a max of 4 Hz (by the manual) that seems te bee your value

Bart - the problem with the built-in threshold trigger, is that yo have no power over when the sampling time starts or stops. I suggest to make your own threshold trigger or use another program technique.

w

Info about the logo is in my first post :) LOGO! 12/24 RCEO 0BA8

My pulse input is connected to I6 , also stated in my first  post. 

Indeed creating my own treshold trigger seems to be doing the job. Still i wonder what's been going on with the original one.